The woman critically injured in a grisly, three-vehicle crash in the Camp Springs area Thursday afternoon has died, police said late Thursday.That brings the number of people killed in the incident in the 6800 block of Allentown Road to two, police said. They identified the woman Thursday night as 65-year-old Joyce Alexander, of Temple Hills.

Also killed was 47-year-old Arnold Brown, of Suitland, police said.

The crash occurred just after noon. Police said Brown was headed west on Allentown Road in a Mitsubishi Galant when he lost control of his vehicle, ran into a Honda Accord headed the same way, and then careened into oncoming traffic. There he collided head-on with Alexander's Toyota Camry, police said.

Brown was killed, and Alexander was taken to the hospital with critical injuries, police said. She later died. The Honda driver, they said, was not hurt.

It remains unclear why Brown lost control of his vehicle, police said.